Company lists · Data refreshed September 2026
Top 25 Window repair companies based in the United Kingdom
RevenueBase identified 215 window repair companies headquartered in the United Kingdom as of September 2026 and tracks 521 professional contacts across them, including 94 with verified work emails. London is the largest hub.
This list covers window repair companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest window repair companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 19 contacts → | ||||
Partial evidence “The timber-framed window company" Specialties- New Sash and Casement Windows - Double Glazing - Full Restoration - Complete Refurbishment - Draught Proofing We take great pride in…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14 contacts → | ||||
Partial evidence “Alpha Group is a Midlands based specialist in high quality refurbishment and fit-outs, and also are experts in installing Windows and Doors for both the domestic and commercial…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 9 contacts → | ||||
Partial evidence “At SGC Glass, we are leaders in commercial glazing, aluminium fabrication, and window and door installation, delivering exceptional quality and craftsmanship since our founding in…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 9 contacts → | ||||
Indirect evidence “COMPLETE GLASS & GLAZING SOLUTIONS FOR DOMESTIC & COMMERCIAL PROJECTS Second-generation family business with 55+ years of excellence in the glass industry - Oxfordshire and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 9 contacts → | ||||
Indirect evidence “We Replace Failed Double Glazing At Cloudy2Clear we like to keep things simple AND affordable What is a Failed Double Glazed Unit?” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 8 contacts → | ||||
Partial evidence “We are a team of young, highly motivated professional fixers, specializing in Windows Fixing, but we also cover other work and services, such as cladding facades, curtain walling…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 7 contacts → | ||||
Strong evidence “In 1943 West Leigh were busy repairing the bomb damaged windows and facades of London's buildings.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 7 contacts → | ||||
Partial evidence “Major Glass and Glazing is a company that can offer replacement glass, emergency glazing, repair broken glass.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 6 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 6 contacts → | ||||
Indirect evidence “Part of the South East Group of companies, South East Glass & Glazing Ltd are a private limited glazing company situated in South East London and Kent, providing a professional…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 contacts → | ||||
Strong evidence “We offer our customers the complete window fitting service, including site surveys, design, manufacture, repair and refurbishment, installation and double glazing.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Indirect evidence “ADCO Glazing has continually invested in business development, reflecting our commitment to offering exceptional service.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Partial evidence “D&M Windows & Doors Ltd is a company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “At Chelsea Glass, we have the experience and expertise to provide you with the complete range of glazing services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Strong evidence “Window Repair Centre is a FENSA registered company, with 30+ years of experience repairing and replacing windows, doors, and conservatories.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Indirect evidence “Prime Glaze are a team based in the heart of Wembley.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Strong evidence “Mila Maintenance & Installation are specialists in the repair, maintenance, and replacement of window and door ironmongery in the social housing, commercial office, health, and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Strong evidence “We are a small dedicated family run business specialising in- Overhaul and draught proofing of original timber sash windows and doors - Timber repairs to windows and doors - New…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “APW SERVICING LIMITED is based in Cannock, Staffordshire.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Partial evidence “Cambridge Sashcraft has been sympathetically restoring and upgrading windows in Cambridge’s homes, schools and colleges since 2013.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Partial evidence “8220;I have recently had all my windows (and previously front door) replaced by Strata windows.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Bespoke glazing solutions - Multi skilled specialist glaziers offering both commercial & domestic services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “E&a windows ltd - architectural glazing, windows, doors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “About Montrose Glass Welcome to Montrose Glass, your trusted British Standard Glaziers providing comprehensive glazing and glass services across the UK without any call-out fees!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: window repair companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names window repair companies.
- Partial evidence
- Its own public description names part of window repair companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name window repair companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 215 window repair companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 94 reachable decision-makers.
Free signup · no credit card
Window repair companies based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 215 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among window repair companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “window repair companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names window repair companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among window repair companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 94 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names window repair companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many window repair companies are there based in the United Kingdom?
RevenueBase identified 215 window repair companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Core Sash Windows, headquartered in London, tops this list with the largest team on record.
Which city has the most window repair companies?
London leads with 18 headquartered companies, followed by Cambridge (4) and Edinburgh (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 94 verified decision-maker contacts tracked across these 215 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 215 window repair companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Window repair companies by geography
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Window repair companies based in Australia
- Window repair companies based in Canada
- Window repair companies based in Germany
- Window repair companies based in the Netherlands
- Window repair companies based in Sweden
- Window repair companies based in the United States